The term under-brush refers to the vegetation that grows on the ground beneath the trees or other tall plants. Some synonyms for under-brush include understory, ground cover, shrubs, bushes, and low-growing vegetation. These terms are commonly used in ecology, forestry, and landscaping. The under-brush can be an important component of any ecosystem as it provides habitat and food for many animals. However, it can also be a nuisance for humans, as it can impede movement and visibility. Land managers often use methods such as prescribed burning or herbicides to manage under-brush growth and maintain a healthy ecosystem.